As many already know, I’ve been trying to get the MySQL Workbench migration feature working between Microsoft SQL Server 2012 and MySQL 5.5. There are a number of features added to the 5.2.43 point release, and one led me to believe that the Migration tool expects to find the data in a schema of its own, as opposed to the dbo schema. Having made that change in Microsoft SQL Server, it did appear to have a positive impact on the migration and when I corrected a character set mismatch it worked perfectly!

MySQL Workbench successfully migrated the schema and table but failed to migrate the data because of a character set mismatch. I updated Bug 66516 the log file from the character set mismatch before I retyped all 9 test rows to make sure they were in a latin1 character set.

I shortened the original log file because the actual log had over 2,000 blanks line :-(. That’s probably something that should be fixed in the code too.

Originally, I thought the failure was due to the extended ASCII characters in the Microsoft SQL Server table. It still failed when I took all of the extended characters out. However, Alfredo suggested it was a character set issue, which is obvious when I looked more closely at the log – '\x9Acak' is clearly an incorrect string. I retyped the INSERT statement for the nine rows and it worked perfectly. Naturally, I’ve updated open Bug 66516 with the log file.

If you’re curious about the Microsoft SQL Server configuration check this post.

9 Responses to 'Bulk Transfer Works'

Alfredo sent me an email in reply to mine earlier this evening and suggested that I’d missed the character set mismatch. He was right. I’ve updated the blog post with the change. Also, I change the title but not the underlying link because there were already tweets on it.

Are you sure that the Microsoft SQL Server 2008 instance is all latin1? Did you create the MySQL database instance as utf-8? If so, could you post the error messages and the version of MySQL Workbench that you’re working with?